Window operating mechanism



Nov. 5, 1940. H MURR|N 2,220,537

WINDOW OPERAT ING MECHANI SM Filed June 13, 1959 3 9 3 /Nve/VTOQ 38 GAA/55TH H. Mue/N MIM 2%? Patented Nov. 5, 1940 PATENT osi-ICE WINDOW OPERATING MECHANISM Gahlbeth H. Murrin, Pasadena, Calif., assgnor to Martha W. Murrin, Fullerton, Calif..

Application June 13, 1939, Serial No. 278,810

10 Claims.

This invention relates generally to closures such as Casement Windows, and particularly to devices manually operable to actuate such closures from within the building.

An object of my invention is to provide a window operating device, which, in its installed position, is capable of being manually operated to open and close a easement Window with but negligible eiTort, and which rigidly maintains the window in any position of adjustment.

Another object of my invention is to provide a window operating device which is characterized by a comparatively few parts of simple construction, capable of being inexpensively manufactured and assembled so as to particularly adapt the device for quantity production, enabling the device to be sold at a very lowcost.

A further object of the invention is to provide a window operating device which embodies a worm and wheel driving connection maintained in accurate intermeshing relationship by bearings for the worm, mounted on a support in a novel manner and rigidly secured in place by the co-action of the support with retainer elements forming a part of the rotatable mounting for the Worm wheeel on the support, all while enabling the parts to be assembled with the utmost ease and dispatch to produce an accurately operating mechanism in which the original alinement of the parts will be maintained indefinitely, irrespective of normal wear thereon.

With these and other objects in View, the invention resides in the combinations and arrangements and functional relationships of elements as set forth in the following specification and particularly pointed out in the appended claims.

In the accompanying drawing,

Figure 1 is a plan View illustrating the window operating device of this invention;

Figure 2 is a fragmentary plan sectional View of the window operating device;

Figure 3 is a fragmentary view of the window operating device in side elevation;

Figure 4 is a longitudinal sectional view taken on the line 4-4 of Figure 1;

Figure 5 is an enlarged transverse sectional View taken on the line 5-5 of Figure 3.

In its present embodiment the invention comprises a support S having a base section I in the form of a rectangular sheet metal plate, and a mounting section I I also in the form of a sheet metal plate bent into generally U-form to provide rectilinear branches I2 and I3 connected at one end in spaced parallelism by a semi-circular connecting bight I4. The longitudinal edges of the mounting section are laterally bent to provide confronting flanges I and I6 along the side edges of the respective branches I2 and I3 and around the inner side of the bight I4, all for a purpose to be hereinafter described.

(Cl. 'i4-425) A Worm II is provided with a square or other non-circular bore I8 to receive the shank I3 of a suitable handle (not shown) for rotating the worm, and is reduced in diameter at its ends to provide journals and 2| adapted to be rotatably mounted in the bores of bearings 22 and 23. These bearings are in the form of relatively thick metal'disks adapted to abut transverse shoulders 24 and v25 on the worm at the inner ends of the journals, and their peripheral surfaces are provided with annular grooves 26 and 21 adapted to receive the anges I5 and I6, respectively, to confine the bearings in the bight I4 against displacement axially of the worm I'I.

A member in the form of an arm 28 is provided at one end with a hub constructed to form a segment of a worm wheel 29, and is pivotally mounted on a pin 3D with the worm wheel inl mesh with the worm I'I. The pin 30 is provided at one end with a head 3|, and passes through an opening 32 in the branch I3 of the mounting section II, and through openings 33 and 34 in combined spacing and retaining elements 35 and 36, which co-act to maintain the worm wheel centered With respect to the Worm. The other end of the pin 30 is reduced in diameter to form an annular shoulder 3l abutting the branch I2 of the mounting section II, and the reduced extremity of the pin passes through an opening 38 in the branch I2.

A flat head screw 39 passes through a countersunk opening in the base section Il, and is threaded into the pin 30 for co-action with a rivet 40 in rigidly securing the mounting and base sections together, with the arm 28 freely mounted on the pin between the elements 35 and 36 for pivotal movement in response to rotation of the worm I1. The member 28 is adapted forroperative connection to a Casement window indicated diagrammatically at C, in Figure 1, by means of a slide bracket B which forms nol part of the present invention and, therefore, requires no detailed description.

It will be noted that the elements 26 and 21 t snugly between the anges I5 and I6 of the branches I2 and I3, and are rectangular in outline, with their ends symmetrically related to their openings 33 and 34. As clearly shown in Figure 3, an end edge a of each of these elements abuts the peripheries of the bearings 22 and 23 so as to co-act with the flanges I5 and I6 in rigidly confining the bearings against lateral disend of the elements can abut the bearings 26 and 21 to rigidly hold them in place.

It will be clear from the foregoing description that the window operating mechanism is composed of a relatively feW simply constructed parts which can be easily assembled to form an accurate and rugged unit capable of functioning accurately under exacting and severe operating conditions for an indefinite period, yet can be manufactured at an extremely moderate cost, as it is particularly adapted for quantity production.

What is claimed is:

1. In a device of the class described, a support including a U-shaped mounting portion providing parallel branches and a connecting bight having spaced flanges; a Worm Wheel rotatably mounted on the support between said branches thereof; a worm; bearings in which said worm is journaled; and means co-actable with said bearings and flanges to conne the bearings in said. connecting bight against axial displacement, with the worm in mesh with the worm Wheel.

' 2. In a device of the class described, a support including a U-shaped mounting portion providing parallel branches and a connecting bight having spaced flanges; a worm wheel rotatably mounted on the support between said branches thereof; a worm; bearings in which said Worm is journaled; the bearings having peripheral annular grooves receiving said flanges to confine the bearings in the connecting bight against axial displacement from the support; and means on the support co-acting with the bearings to prevent lateral displacement thereof from the flanges, with the wo-rm in mesh with theA Worm wheel.

3. In a device ofthe class described, a' support including a U-shaped mounting portion providing parallel branches and a connecting bight having spaced flanges; a Worm wheel; means mounting the worm wheel on the support between said branches thereof for rotation; a wo-rm'; bearings in which the worm is journaled, having peripheral annular grooves receiving. said flanges to confine the Worm inthe connecting bight against axial displacement; and means coacting with the mounting means for said member, and with the bearings, to secure the latter against lateral displacement from said flanges, with the worm in mesh with the worm wheel.

4. In a device of vthe class described, a support including a U-shaped mounting portion providing parallel branches and a connecting bight having spaced flanges; a worm Wheel; means mounting the Worm wheel on the support between said branches thereof for rotation; a worm; bearings in which the Worm is journaled, having peripheral annular grooves receiving said flanges to confine the `worm in the connecting bight against axial displacement; and spacer elements on said mounting means, engaging the bearingspto secure the latter against lateral displacement from said flanges, with the Worm in mesh with the worm Wheel.

5. In a device of the class described, a support including a U-shapedmounting portion providing parallel branches and a connecting bight having spaced flanges; a worm wheel; a pin connecting said branches of the mounting portion and on which said worm wheel is rotatably mounted; a worm; bearings in which the Worm is journaled, having peripheral annular grooves receiving said flanges to confine the worm in the connecting bight against axial displacement; and spacer elements mounted on said pin between said branches at opposite sides of the Worm Wheel, and engaging the bearings to confine the latter against lateral displacement from the flanges, with the worm in mesh with the worm wheel.

6. In a device of the class described, a support including a U-shaped mounting portion providing spaced parallel branches and a connecting bight; flanges extending along the sideiedges of said branches and bight; a worm wheel; a pin connecting said branches and on Which the Worm wheel is rotatably mounted; a worm; bea'rings in which the worm is journaled, having peripheral annular grooves receiving saidflanges to confine the worm in the connecting bight against axial displacement; and spacer elements supported on said pin at opposite sides of the worm wheel and maintained against turning by engagement With said flanges, said elements engaging the .bearings to conne the latter against displacement laterally from the flanges.

7. In a device of the class described, a support including a U-shaped mounting portion; a Worm Wheel; means rotatably mounting the worm wheel in said portion; a worm; means rotatably mounting the worm in the closed end of said portion and in mesh with the Worm Wheel; means co-acting with said portion and with the last means to rigidly maintain the latter against displacement axially from said portion; and means co-acting with the Worm Wheel mounting means and worm mounting means to confine the latter against displacement laterally from said portion.

8. In a device of the class described, a support including a U-shaped mounting portion;

a worm Wheel rotatably mounted in said portion; a worm; bearings in which the Worm is journaled; and co-acting flanges on said portion and axially facing shoulders on said bearin gs maintaining the latter against axial displacement from said portion, With the Worm in mesh with the worm Wheel.

9.In a device of the class described, a support including a U-shaped mounting portion; a worm Wheel rotatably mounted in said portion; a worm; bearings in which the worm is journaled; flanges on said portion and grooves in said bearings co-acting to maintain the latter-against axial displacement from said portion, with the worm in mesh with the Worm wheel; and means co-acting with the bearings to prevent displacement of the latter laterally from the closed end of said portio-n.

10 In a device of the class'described, a support including a U-shaped mounting portion having spacedflanges extending radially inward around its closed end; a Worm wheel rotatably mounted in said portion; a worm; bearings in which the worm is journaled; and means dening annularly extending shoulders on the bearings engaging said flanges for co-action therewith in maintaining the bearings against axial displacement from said portion, with the worm in mesh with the worm wheel.

GAHLBETH H. MURRIN. 

